Centrifugal table.



H. ADAMS.

CENTRIFUGAL TABLE. 7 APPLICATION man JAN-9.1914. RENEWED OCT-21.19%.

Patented Apr. 10, 1917.

' 2 SHEETS-SHEET 1.

H. ADAMS. CENTRIFUGAL TABLE. APPLICATION FILED JANJQ. 1914- RENEWED OCT- ZI, 1916. 1,221,951.; v Patented Apr. 10, 1917.

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V W mw. N WN Nu WN W QR. NW %N c I .IH NN 1i i 1 l a k v i my QM i QM 2 .QN \QN 5,. N. QR. \W \m, \N I %N\ L m M M Mm m hm f V W a up M w 4 m w w HENRY ADAMS, OF STAMFORD, CONNECTICUT.

. CENTRIFUGAL TABLE.

Specification of Letters Patent.

' Patented Apr. lo, lair.

Application filed January 9, 1914, Serial ITO/811,201. Renewed October 21, 1916. Serial No. 127,032.

To all whom it may concern.

Be it known that I, TIENHY ADAMS, a citizen of the United States, residing at Stamford, in the county of F airfield and State of Connecticut, have invented certain new and useful Improvements in Centrifugal Tables; and I do declar the following to bea full clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in centrifugal tables.

The object of the invention is to provide a revoluble table so constructed that separa:

tion of the material treated is accomplished by the combined influences of centrifugal force and gravitation, under the action of which, the material is deposited in regular gradations in separate receptacles.

Another object of the invention is to provide a table of this character so constructed that it may be used equally well for concentration, sizing and washing of ores; treat- I ment of slimes, for amalgamating, and for the cyanid treatment of gold and silver ores. With these and other objects in View, the

invention consists of certain novel'features of construction, and the combination and arrangement of parts, as will be more fully described and claimed.

In the accompanying drawings Figure 1 represents a plan viewof a table spaced series 4, 5, 6, 7 and 8 of graded planes, said planes being of annular formation.

The solid or imperforate central portion 2 of the table is fixed to a centrally disposed upright shaft 9 rotatably mounted in suitable bearings B. Rotary motion may be applied to the vertical shaft 9 from any source of ower in any determinate way. The centmlly disposed cone 3 acts as a distributor or a deflector to impart initial outward movement to the material as it is received upon the concentrating table, a suitable spout P which extends around the shaft 9 being preferably employed to discharge the material to be treated, onto the table.

A table base or supporting member 10 is shown in circular form being preferably constructed of iron shafting or other suitable material and having a common center which is the main shaft 9. Thisbase is connected with the central portion 2 and with the various planes by brace rods 11 of suitable construction.

The edge of the central portion 2 is connected with the lower series of planes 8, the planes 12 of which are arranged in step like form and gradually decrease in height from the member 2 outward. These planes 12 have risers 13 arranged between them and extending from the outer edge of each plane. These risers are inclined downwardly and inwardly, as shown in Fig. 2 for a purpose to be described.

The planes 14 of the upper series 4 are independent of each other and increase gradually in height and in size from the center of the table toward its periphery, each being of annular formation and inclined downwardly and inwardly. Each plane 14: is provided on its inner edge with a downwardly extending lip 14 inclined toward the center of the table and extending under the outer edge of the next plane below it in the same series'and which is designed, un-

der the action of centrifugal force, to separate the material thrown thereagainst, causbeen'thoroughly separated, as will be hereinafter more fully described Four of the planes 14.- are here shown, but any desired number may be employed, according to the character of the work, and the material to be separated.

The series 5 is disposed below the series 4: any suitable or desired distance, and comprises three annular planes 15, decreasing in overgreaterarea, and the heavier particles settle on'ornea r the surface of the table and-move upward until the pulp reaches-the edge ofthe' central portion 2, and from this point," the 'aotu a1 separation of: the materi a1 7 size and height from the periphery toward 7 the centerof, the table,.and each having on itsinner edge a lip similar to the lip 14 of the series 4 above and Whichis designed height from the periphery of the table toedge a lip 16 similar to those above detral portion 2.

ward its center, and eachhaving on its inner scribed relative. to. the other series.

A single annular plane 7 is shown disposed between series 6 and 8 and as a lip 7 at its inner edge inclined downwardly and inwardly toward the center of the table. The planes at the periphery of the respective series gradually increase in width from 'thetop or uppermost series 4 to the lowermost series 8', as is clearly shownin Fig. 2, the otherrpla nes of the series being of the same width, but it is obvious that these proportions may be varied to meet the require-- ments of the material to be treated:

The planes of the respective series are con nected by adjustable members, here shown in the form of adjustable screws or bolts 18, which serve also as spacing members for the planes of the respective series, and are adjustableto vary the distances between said series; r V

The planes of each series are positioned at the same angle relativeto the base 10 that the central portion 2 occupies, and the lips of the planes are arranged in the same angle with relation to the base 10, as is the cen- The lips of the various planes are positioned at the same angle, but they may be changed if found necessary. The length or width of these planes depends oaths material andth'e capacity'of'the machine,and'those of each set of'planes underneath those'above it, are arranged'parallel to the ones above by increasing the width of each of the outer planes of each series, as above described. The inner planes of each series will" be positioned a little closer to the central'shaft 9 than those inthe series above it, so that the lip of the plane above willdischargefonto the'middle of the'lip of the corresponding plane in the series below it. the use of this centrifugal table, fine crushed ore or other material tobe classified vortreated, is mixed withwaterandrun onto the revolving] table at the center 1 thereof throughthe circular spout P which extends museum shaft 9 and the centrifugal force carriespulp or other material upv over the solidinclinedcentralportion 2, which gradually becomes {thinner as the pulp spreads treated begins. The thin stream of pulp falls from the edge of the central portion 2 onto the downwardly inclined lip 14 of the uppermost series of planes 4, and the centrifugal force of the tables carries the heavier material up said lip along the first or innermost plane 14 to the outer edge of said plane. The lighter material falls from the lip 14 of the inner plane 14 into the opening between said lip and the riser 13 of the innermost step or plane 12 and over said plane 12 to its outeredge, and at the edge of this plane to step 12 and the outer edge of the innermost plane 14, the same operation is repeated and continued, the heavier particles passing up the lips of the respective planes onto the planes above them, and the lighter particles falling downwardly through the openings between the planes onto the series next below and this operation is repeated in the respective series of planes until the material reaches the outermost planes of each series from which it falls or passes in the suitable receptacle arranged to receive it, having been classified into five different sizes as shown in this apparatus, but it is to be observed that the number of the series may be varied when found necessary. The material is concentrated according to the different specific gravities of the various minerals contained in the ore, from the lightest in the series 8 to the heaviest n series 4.

'Should it be desired to wash or treat the ore or mineral with any desired solution, the circular slotted spout or spouts may be placed around the main shaft 9 to admit said solution onto the table during the feeding of the material to be treated.

From the above, it will be obvious that thiscentrifugal table may be used for a variety of purposes, and is especially adapted for use for the concentration of ores or minerals, for the treatment of slimes, for the classification or sizing of ores or minerals, for the washing of ores or minerals, and especially for amalgamation, in which latter case, the lips and planes are made of copper and the pulp from the mill passing over the revolving table by means of centrifugal force, will pass up the table and over the diiferent planes and lips, whereby every particle of the pulp will touch the copper plates, thereby obtaining a perfect amalgamation. It is also found to be especially useful in the cyanid treatment of gold and silver ores, as the ore, in its passage over the planes of the table, is so separated and distributed that every particle thereof is be operated at a minimum cost and with very little trouble, as the machine, after being set in operation will automatically separate the material. treated, theoperator being required only to see that the proper quantity of pulp is fed on to the table, and this may be automatically controlled, if desired.

1. claim as my invention ii A centrifugal table adapted to have rotary movement imparted thereto and comprising a concentric series of independent annular planes each inclined outward and upward from the' preceding and disposed at a higher level in progressive order from the center outward, and each having on its inner edge a lip inclined downwardly and toward the center of the table, each lip being so located with respect to the annular plane arranged within said lip that the material projected centrifugally from said plane will impinge on said lip intermediate its upper and lower edges.

2. A centrifugal table adapted to have rotary movement imparted thereto and comprising a central imperforate portion inclined upwardly and outwardly from its center to its periphery and a concentric series of independent annular planes arranged around said central portion and each having on its inner edge a lip inclined downwardly and toward the center of the table, each lip being so located with respect to the annular plane arranged within said lip that the material projected centrifugally from said. plane will impinge on said lip intermediate its upper and. lower edges.

3. A centrifugal table adapted to have rotary movement imparted thereto and comprising a central imperforate portion inclined upwardly and outwardly from its center to its periphery and a concentric series of independent annular planes arranged around said central portion and each having on its inner edge a lip inclined downwardly and toward the center of the table, each lip being so located with respect to the annular plane arranged within said lip that the material projected centrifugally from said plane will impinge on said lip intermediate its upper and lower edges, and a series of step-like planes arranged in planes below said central portion and decreasing in height from the center toward the periphery of the table, and downwardly and inwardly inclined risers each connecting the outer edge of one plane with the inner edge of the next plane below it.

4. A centrifugal table adapted to have rotary movement imparted thereto and comprising a central imperforate portion inclined upwardly and outwardly from its center to its periphery and a concentric series of independent annular planes arranged around said central portion and each having on its inner edge a lip inclined down wardly and toward the center of the table each lip being so located with respect to the annular plane arranged within said lip that the material projected centrifugally from said plane will impinge on said 11p intermediate its upper and lower edges, and a series of steplil e planes arranged in planes below said central portion and decreasing in height from the center to the periphery of the table, and downwardly and inwardly inclined risers each connecting the outer edge of one plane with the inner edge of the next plane below it, and a plurality of series of independent planes arranged between said upper and lower series. 4

5. A centrifugal table adapted to have rotary movement imparted thereto and comprising a central imperforate portion inclined upwardly and outwardly from its center to its periphery, and a concentric series of independent annular planes arranged around said central portion and each having on its inner edge a lip inclined downwardly and toward the center of the table each lip being so located with respect to the annular plane arranged within said lip that the material projected centrifugally from said plane will impinge on said lip intermediate its upper and lower edges, and a series of step-like planes arranged in planes below said central portion and decreasing in height from the center to the periphery of the table, and downwardly and inwardly inclined risers each connecting the outer edge of one plane with the inner edge of the next plane below it, and a plurality of series of independent planes arranged between said upper and lower series, the intermediate series of planes decreasing in number from the upper toward the lower series.

6. A centrifugal table adapted to have rotary movement imparted thereto and comprising a central imperforate portion in clined upwardly and outwardly from its center to its periphery, and a concentric series of independent annular planes arranged around said central portion and each having on its inner edge a lip inclined downwardly and toward the center of the table each lip being so located with respect to the annular plane arranged within said lip that the material projected centrifugally from said plane will impinge on said lip inter mediate its upper and lower edges, and a series of step-like planes arranged in planes below said central portion and decreasing in height from the center to the periphery of the table, and downwardly and inwardly inclined risers each connecting the outer edge of one plane with the inner edge of the next plane below it, and a plurality of series of independent planes arranged between said upper and lower series, the intermediate series of planes decreasing in numcenter to its periphery, and a concentric series of independent annular planes arranged around said central portion and each having on its inner edge a lip inclined downwardly andftoward the center of the table each lip being so located with respect tothe annular plane arranged within said lip that the material projected centrifugally from said plane will impinge'on said lip intermediate its upper and lower edges, and a series of'step-like planes arranged'in planes below said central portion and decreasing in height from. the center to the periphery of the table, and downwardly and inwardly inclined risers each connecting the outer edge of one plane with the inner edge of the next plane'below it, and a plurality of series of independent planes arranged between said upper and lower series, the intermediate series of planes decreasing in number from the upper toward the lower series, and the outer planes of the respective series gradually increasing in width from the upper to-the lowermost series. V

8, A centrifugal table adapted, to have rotary movement imparted thereto and co1nprising a central imperforate portion inclined upwardly and outwardly from its center to its periphery and a concentric series of independent annular planes arranged around said central portion and each having on its inner edge a lip inclined downwardly and toward the center of the table each lip being so located with respect to the annular plane arranged within said lip that the material projected centrifugally from said plane will impinge on said lip intermediate its upper and lower edges, and a series of step-like planes arranged in planes below said central portion and decreasing in height from the center to the periphery of the table, and downwardly and inwardly inclined risers each connecting the outer edge of one plane with the inner edge of the next plane below it, and a plurality of series of independent planes arranged between said upper and lower series, and means for adjusting the planes of the series toward and away from each other.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HENRY ADAMS.

Witnesses:

JAMES GIBBIN, GEORGE R. CLosE.

. Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. O. 

